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UID:1bde865c-e60f-42d7-9cf0-4e5ce8788882@nexttoyou
DTSTAMP:20261106T165019Z
DTSTART:20261112T180000Z
DTEND:20261112T190000Z
SUMMARY:Joint Condensed Matter Theory and Particle Theory Seminar - Zheng 
 Zhou - Harvard University
LOCATION:Sloane Physics Laboratory 56\, 217 Prospect Street\, New Haven\, 
 CT 06511
DESCRIPTION:Advancing Fuzzy-Sphere CFTs: Heavy Primaries and Hilbert-Space
  Structure\n\nFuzzy-sphere regularization has emerged as a powerful frame
 work for studying three-dimensional conformal field theories (CFTs). Heav
 y operators represent a compelling frontier\, with connections to quantum
  chaos\, thermalization\, and holography that motivate a deeper understan
 ding of their spectrum and structure. However\, accessing these operators
  remains challenging even with the fuzzy-sphere. We address this challeng
 e by developing an exact-diagonalization algorithm that resolves the full
  SO(3) rotational symmetry. For the 3D Ising CFT\, we identify approximat
 ely 100 primary operators\, including many previously unknown heavy scala
 r primaries with scaling dimensions up to Δ ≈ 16.5. Within the scalar pri
 maries\, we identify a branch associated with ϕ^n operators in the ϕ^4 La
 grangian description\, beginning with σ\, ϵ\, ϵ'\, and σ'. Their wave fun
 ctions exhibit a semi-classical structure closely related to the area-pre
 serving diffeomorphism. Finally\, we show that critical points involving 
 fractional quantum Hall states can be studied in a substantially reduced 
 Hilbert space spanned by quasi-hole states of the corresponding FQH wave 
 functions. This suggests a general strategy for exploring CFTs intertwine
 d with topologically ordered phases. This talk is based on arXiv:2609.359
 60.\n\nBiography: Zheng Zhou (周正) is a post-doctoral fellow at Harvard Un
 iversity\, Department of Physics. He received his Ph. D. at Perimete\n\nh
 ttp://next-to-u.app/events/1bde865c-e60f-42d7-9cf0-4e5ce8788882
URL:http://next-to-u.app/events/1bde865c-e60f-42d7-9cf0-4e5ce8788882
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